Dwell reduction circuit to run Toyota COPs on stock ECU

zossy1 · Postby **zossy1** » Sun Feb 05, 2012 1:25 am

Hmm, right you are MB - I was sure I had read the tach thing somewhere. It is possible to read too much I guess ;)

timk · Postby **timk** » Sun Feb 05, 2012 8:12 am

Scoota wrote:Hi Sab.

I'm very interested in the dwell adjuster circuit, DIY-style. I've just finished my first electronics project (Jaycar Digital Fuel Adjuster) and I'm ready for another project. I'm definitely in for $25 if it will be suitable for my NA6. Will it?

I don't have the COPs yet, but it's definitely on the agenda for me. Weren't you making these a little while back? Can I possibly get one from you?

Cheers,
Trav.

From what I have read on the googles, the early NA runs a longer dwell than the later NA and NB. Is anyone here with one of these cars running the stock ECU able to scope it?

Trav, once we know this info I will get in touch with Jason and see if he can come up with anything. I'm no EE.

Cheers

timk · Postby **timk** » Tue Feb 14, 2012 1:32 pm

No NA6 owners wanting to help out with this dwell measurement?

hks_kansei · Postby **hks_kansei** » Tue Feb 14, 2012 1:45 pm

How do you measure it?

If it can be done with a multimeter I can ask Pam to measure it on her car.

manga_blue · Postby **manga_blue** » Tue Feb 14, 2012 1:49 pm

Sab, you can put me down for one of the boards if you do go ahead.

As far as measuring dwell goes, I'm using an Innovate SSI-4 unit and an NA8 OEM ECU. It looks like it can measure and log ignition and/or injector dwell but it will be at least a few weeks before I have the time to try it. I can't help with an NA6 though.